Dr A V Le Blanc wrote:
> I have been doing some experimenting using DRBD (Distributed
> Redundant Block Device; see www.drbd.org) for vice partitions.

We use it here for AFS storage.  One of the sysadmins set up
a linux cluster using the heartbeat software.  Only one of the machines
in the cluster pair runs the AFS server at any given time.
A failover causes the service IP address to transfer to the other
machine, and the AFS server to start on that machine also.

Be very careful with DRBD -- we lost a bunch of data when it
decided to resync the disks the wrong way.  You have to understand
how it decides to do resyncs and when.

Joe Buehler

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